/Engine/Plugins/Runtime/GeometryCache/Source/GeometryCacheStreamer/Public/GeometryCacheStreamBase.h
Get the MeshData at given FrameIndex without waiting for data to be ready Return true if MeshData could be retrieved
virtual bool GetFrameData ( int32 FrameIndex, [FGeometryCacheMeshData](API\Plugins\GeometryCache\FGeometryCacheMeshData) & OutMeshData )